*Wei-Cheng Hsiung¹、Hui-Ling Lin¹、Horn-Sheng Mii²、Ken Ikehara³、Takuya Itaki³、Toshiya Kanamatsu⁴、Yuan-Pin Chang¹ (1.Department of Oceanography, National Sun Yat-sen University, Taiwan, R.O.C.、2.Department of Earth Sciences, National Taiwan Normal University, Taiwan, R.O.C.、3.Geological Survey of Japan, AIST、4.Japan Agency for Marine-Earth Science Technology)